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A boy tried to lift a bucketful of water...

A boy tried to lift a bucketful of water , but failed. What is the work done by him ?

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CHHAYA PUBLICATION-WORK AND ENERGY-EXERCISE (Very short Answer Type Questions)
  1. A person is carrying a bucket of water, and is in a lift moving up wit...

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  2. A motor drives a belt at a constant velocity of v m*s^(-1) . If m kg ...

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  3. A boy tried to lift a bucketful of water , but failed. What is the wor...

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  4. What is the work done by the tension in the string during the oscillat...

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  5. A box was lifted vertically through a height of 6m in 3s . If the box ...

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  6. 1 kg *m=…………J . [Fill in the blank]

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  7. A force vecF =(5hati+3hatj+2hatk)N acts on a particle , and the partic...

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  8. How many jouls are in 1 MeV ?

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  9. What is the unit of energy ?

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  10. Does the kinetic energy of a ball, thrown inside a moving train, depe...

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  11. Which type of energy is lost in doing work against friction ?

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  12. A small car and a lorry are moving with the same kinetic energy . Bra...

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  13. When a body falls on the ground from a height ,it becomes slightly war...

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  14. Is the resistance due to air a conservative force ?

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  15. What happens to internal energy , when temperature of body increases ?

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  16. What type of energy is stored in the spring of a watch ?

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  17. Kinetic energies of a heavy and a light object are the same. Momentum ...

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  18. Momenta of a light and a heavy body are the same .Which body has great...

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  19. If E is the kinetic energy of a body of mass m, what will be its momen...

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  20. An object breakes up into two masses m1 and m2 due to explosion. The ...

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